Answer:
Quartz falls into a group of minerals called the silicates, all of which contain the elements silicon and oxygen in some proportion.
Explanation:
If your asking if you can prove everything by science then no but people will try they will give out theories and try to find solutions that they can't. And if your asking if your able to prove all things that happen/the explanations scientifically then the answer is no. Take how the world was made for example nobody knows how it is made. The scientists are trying to prove it was created by some big bang when in reality nobody really knows that's just a theory. One of many theories.
Answer: A It tells you how old fossils are
Explanation:
Answer-E,A,H,C, G, D,F,B
Explanation 1. Community- The interacting populations within a geographic area
2. Biocide-a. A substance that is capable of destroying living organisms
3.Habitat- h. The environmental situation in which an organism is generally found
4. Biosphere- The portion of the earth's surface, water, and air that can support life
5. Ecosystem- g. A system formed by the interactions of communities of organisms with each other and the environment
6.Cell- d. The simplest structure that exhibits all of the characteristics of life
7. Ecological niche- f. The role or position that a species occupies in a community
8.Biome- b. All the communities and ecosystems found under a given set of climatic conditions